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cfg80211: allow wiphy specific regdomain management

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Add a new regulatory flag that allows a driver to manage regdomain
changes/updates for its own wiphy.
A self-managed wiphys only employs regulatory information obtained from
the FW and driver and does not use other cfg80211 sources like
beacon-hints, country-code IEs and hints from other devices on the same
system. Conversely, a self-managed wiphy does not share its regulatory
hints with other devices in the system. If a system contains several
devices, one or more of which are self-managed, there might be
contradictory regulatory settings between them. Usage of flag is
generally discouraged. Only use it if the FW/driver is incompatible
with non-locally originated hints.

A new API lets the driver send a complete regdomain, to be applied on
its wiphy only.

After a wiphy-specific regdomain change takes place, usermode will get
a new type of change notification. The regulatory core also takes care
enforce regulatory restrictions, in case some interfaces are on
forbidden channels.

Signed-off-by: Jonathan Doron <jonathanx.doron@intel.com>
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Jonathan Doron
2014-12-15 19:26:00 +02:00
committed by Johannes Berg
parent ad30ca2c03
commit b0d7aa5959
8 changed files with 188 additions and 19 deletions
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14
include/net/cfg80211.h
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@@ -3807,6 +3807,20 @@ const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type,
*/
int regulatory_hint(struct wiphy *wiphy, const char *alpha2);
/**
* regulatory_set_wiphy_regd - set regdom info for self managed drivers
* @wiphy: the wireless device we want to process the regulatory domain on
* @rd: the regulatory domain informatoin to use for this wiphy
*
* Set the regulatory domain information for self-managed wiphys, only they
* may use this function. See %REGULATORY_WIPHY_SELF_MANAGED for more
* information.
*
* Return: 0 on success. -EINVAL, -EPERM
*/
int regulatory_set_wiphy_regd(struct wiphy *wiphy,
struct ieee80211_regdomain *rd);
/**
* wiphy_apply_custom_regulatory - apply a custom driver regulatory domain
* @wiphy: the wireless device we want to process the regulatory domain on